# Copyright (c) 2007, Enrico Franchi
# All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of the University of California, Berkeley nor the
#       names of its contributors may be used to endorse or promote products
#       derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

from decorators import with_default_notification_center
import linguistics


def refreshModelNotificationNameByTag(model_name):
    return 'refresh_' + linguistics.modelNameByTag(model_name)

def refreshedModelNotificationNameByTag(model_name):
    return 'refreshed_' + linguistics.modelNameByTag(model_name)
    
def refreshModelNotificationNameByObject(obj):
    return 'refresh_' + linguistics.classNameFromObject(obj)

def refreshedModelNotificationNameByTag(obj):
    return 'refreshed_' + linguistics.classNameFromObject(obj)


# Procedures for performing an action.

@with_default_notification_center
def askRefreshModel(notificationCenter, model_name, notifier):
    print 'Posting refresh request (%s)...' % model_name
    notificationCenter.postNotificationName_object_(
        refreshModelNotificationNameByTag(model_name), notifier
    )
    
    
# Procedures for dealing with registrations
    
@with_default_notification_center
def registerForRefreshNotifications(notificationCenter, observer, selector, notifier):
    name = linguistics.classNameFromObject(observer)
    print 'Registering %s for refresh_%s' % (observer, name)
    notificationCenter.addObserver_selector_name_object_(
        observer, 
        selector, 
        'refresh_' + name, 
        notifier
    )
    
@with_default_notification_center
def registerForRefreshedNotifications(notificationCenter, observer, selector, tag):
    name = linguistics.modelNameByTag(tag)
    print 'Registering %s for refreshed_%s' % (observer, name)
    notificationCenter.addObserver_selector_name_object_(
        observer, 
        selector, 
        'refreshed_' + name, None
    )

@with_default_notification_center    
def registerForPerformActionNotifications(notificationCenter, observer, selector):
    print 'Registering %s for perform_action management.' % observer
    notificationCenter.addObserver_selector_name_object_(
        observer, 
        selector, 
        'perform_action', 
        None
    )

@with_default_notification_center
def registerForErrorNotifications(notificationCenter, observer, selector):
    print 'Registering %s for error management.' % observer
    notificationCenter.addObserver_selector_name_object_(
        observer, 
        selector, 
        'error', 
        None
    )